lib/ext2fs/dblist_dir.c

   1 /*
   2  * dblist_dir.c --- iterate by directory entry
   3  *
   4  * Copyright 1997 by Theodore Ts'o
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Public
   8  * License.
   9  * %End-Header%
  10  *
  11  */
  12
  13 #include <stdio.h>
  14 #if HAVE_UNISTD_H
  15 #include <unistd.h>
  16 #endif
  17 #include <string.h>
  18 #include <time.h>
  19
  20 #include "ext2_fs.h"
  21 #include "ext2fsP.h"
  22
  23 static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry *db_info,
  24                        void *priv_data);
  25
  26 errcode_t ext2fs_dblist_dir_iterate(ext2_dblist dblist,
  27                                     int flags,
  28                                     char        *block_buf,
  29                                     int (*func)(ext2_ino_t dir,
  30                                                 int     entry,
  31                                                 struct ext2_dir_entry *dirent,
  32                                                 int     offset,
  33                                                 int     blocksize,
  34                                                 char    *buf,
  35                                                 void    *priv_data),
  36                                     void *priv_data)
  37 {
  38         errcode_t               retval;
  39         struct dir_context      ctx;
  40
  41         EXT2_CHECK_MAGIC(dblist, EXT2_ET_MAGIC_DBLIST);
  42
  43         ctx.dir = 0;
  44         ctx.flags = flags;
  45         if (block_buf)
  46                 ctx.buf = block_buf;
  47         else {
  48                 retval = ext2fs_get_mem(dblist->fs->blocksize,
  49                                         (void **) &ctx.buf);
  50                 if (retval)
  51                         return retval;
  52         }
  53         ctx.func = 0;
  54         ctx.func2 = func;
  55         ctx.priv_data = priv_data;
  56         ctx.errcode = 0;
  57
  58         retval = ext2fs_dblist_iterate(dblist, db_dir_proc, &ctx);
  59
  60         if (!block_buf)
  61                 ext2fs_free_mem((void **) &ctx.buf);
  62         if (retval)
  63                 return retval;
  64         return ctx.errcode;
  65 }
  66
  67 static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry *db_info,
  68                        void *priv_data)
  69 {
  70         struct dir_context      *ctx;
  71
  72         ctx = (struct dir_context *) priv_data;
  73         ctx->dir = db_info->ino;
  74
  75         return ext2fs_process_dir_block(fs, &db_info->blk,
  76                                         db_info->blockcnt, 0, 0, priv_data);
  77 }